Method for treating iron-carbon microelectrode and sewage

An iron-carbon microelectrode and sewage treatment technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of low ammonia nitrogen removal rate and inability to simultaneously remove nitrogen pollution in sewage and phosphorus-containing pollutants, etc., to achieve the effect of wide range of sources, lower investment and operation costs, and lower preparation and use costs.

Active Publication Date: 2012-08-15
湖南艾森尼克环保科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The iron-carbon microelectrode reported in the above literature is an iron-carbon microelectrode composed of granular or powder iron-carbon fillers. This iron-carbon microelectrode has a high removal rate for COD, nitrobenzene compounds, chroma, and heavy metals in sewa

Method used

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  • Method for treating iron-carbon microelectrode and sewage
  • Method for treating iron-carbon microelectrode and sewage
  • Method for treating iron-carbon microelectrode and sewage

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0068] Example 1

[0069] Set the specific surface area to 1000m 2 / g, the polyacrylonitrile-based carbon fiber with a diameter of 7μm is cut into small pieces of fiber bundles with a length of about 25cm-30cm, and 5g of the polyacrylonitrile-based carbon fiber bundles are respectively suspended in a diameter of 5mm and a mass of On a 25g iron wire, the length of the carbon fiber suspended on the iron wire is about 10cm, so that figure 1 The iron-carbon microelectrode of the structure shown. And follow it Figure 5 The installation method shown, installed in figure 2 In the 10L reactor shown, the filling rate of the iron-carbon microelectrodes was 75%, and the iron-carbon microelectrode reactor was obtained.

[0070] Taking the Qinghe River water from the Lishui Bridge section of Chaoyang District, Beijing as the treatment object, the iron-carbon microelectrode reactor is placed in it, and it is aerated through the air inlet 7 to maintain the dissolved oxygen concentration of the...

Example Embodiment

[0075] Example 2

[0076] 5g of the carbon fiber in Example 1 was suspended on a 10g iron wire by winding, and the length of the suspension of the carbon fiber was about 15cm to obtain figure 1 The iron-carbon microelectrode of the structure shown.

[0077] Such as Figure 4 As shown in the placement method, the iron-carbon microelectrode is placed in a glass jar with length, width, and height of 30cm, 30cm and 40cm, containing sewage sewage, and artificially synthesized phosphorus concentration of 50mg / L is added to it High phosphate wastewater makes the phosphorus concentration of the phosphate in the sewage in the glass tank 5mg / L, which is used to simulate lake or pond sewage water. The iron-carbon microelectrodes are arranged in a double layer staggered up and down in the glass cylinder, such as Figure 5 As shown, Figure 5 It is a top view of the iron-carbon microelectrode provided in an embodiment of the present invention in a sewage water body. The iron-carbon microelec...

Example Embodiment

[0079] Example 3

[0080] 30g of the carbon fiber used in Example 1 was suspended on a 30g iron wire by winding, and the suspended length of the carbon fiber hanging on the iron wire was about 10cm to obtain figure 1 The iron-carbon microelectrode shown. Install the obtained iron-carbon microelectrode in figure 2 In the 10L reactor shown, the filling rate of the iron-carbon microelectrodes is about 80%, and the iron-carbon microelectrode reactor is obtained.

[0081] The iron-carbon microelectrode reactor was placed in the mixed water of Qinghe River water of Example 1 and the underground sewage of Example 2, and the contents of total organic carbon, total nitrogen and total phosphorus in the mixed water were 15-18 mg / L, respectively , 21~25mg / L and 2~3.5mg / L. Aerate the mixed water body to make the dissolved oxygen concentration of 1mg / L~3mg / L, continuously feed water through a peristaltic pump, and let the mixed water body stay in the iron-carbon microelectrode reactor for 12 h...

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Abstract

The invention provides an iron-carbon microelectrode, which comprises an iron base material and carbon fibers suspended on the iron base material. Sewage is treated by means of directly standing the iron-carbon microelectrode in the aerated sewage. The iron-carbon microelectrode can generate micro-current, iron ions, active radical, high-adsorption iron compound and the like under a micro-electrolysis effect, biological activity and biochemical degradability of organisms can be improved, inorganic phosphate ions, inorganic sulfate ions, inorganic metal ions and the like are removed, and the purpose of purifying the sewage is achieved. In addition, the carbon fibers suspended on the iron base material have high adsorption and biocompatibility, dwelling and breeding of microorganisms and formation of a complex microbial film system are facilitated, and the organisms, ammonia nitrogen, total nitrogen, total phosphorus and the like can be removed. Accordingly, the iron-carbon microelectrode can synchronously remove nitrogen pollutants and phosphorous pollutants in the sewage, and has high organism, ammonia nitrogen and soluble phosphate removal rate.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an iron-carbon microelectrode and a sewage treatment method. Background technique [0002] With the progress of society and the improvement of human living standards, there are more and more industrial sewage and urban domestic sewage, which not only causes waste of water resources but also seriously affects the water environment and the image of towns, endangering water organisms and human health. , so the wastewater needs to be treated to meet national and local standards. [0003] Micro-electrolysis technology is currently an ideal process for treating high-concentration organic sewage. It uses the micro-electrolysis material filled in the sewage to generate a 1.2V potential difference to electrolyze the sewage to achieve the degradation of organic sewage. purpose of pollutants. At present, the most commonly used microelectrode in micro-electrolysis technolo...

Claims

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Application Information

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IPC IPC(8): C02F1/461
Inventor 余辉姚理为余建平田学达刘倩王雪牛勇燕姝雯杨凡胡洋杜东
Owner 湖南艾森尼克环保科技有限公司
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